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vb.net move files from one folder to another on a schedule

Posted on 2013-06-25
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Last Modified: 2013-06-26
I have a folder on my FTP server.  I need to take the files in it and move them to a different folder every 10 minutes.  Looking for either ideas on doing this using vb.net or a program already out there?
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Question by:bergertime
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by:lenordiste
lenordiste earned 100 total points
ID: 39275564
just my thoughts on some possible solutions.
- use a worflow management tool (System Center Orchestrator if you're a windows guy?): smallest amount of work but you need the software / license
- develop a worflow in .NET with WorKFlow Foundation: needs a bit of work and may be overkill if your workflow is very simple.
- develop a VB.NET windows service with a ten minute timer: a bit of work but it's a proven working method.
- develop a VB.NET batch and use a task scheduler to launch it every 10 minutes: not much work to do but you have to like windows task scheduler

of course, do use a FTP library which handles move commands (rename) !

Happy to exchange on those thoughts with you or other experts :) !
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Expert Comment

by:AlexPace
ID: 39276109
Robo-FTP can be scripted to do this and can install as a Windows Service that does the work, sleeps for ten minutes, works, sleeps, works, sleeps and so on... something like:

:start
FTPLOGON "myftp.server.com" /user="UserID" /pw="secret" 
FTPCD "/source" 
:find_file_to_move
FTPGETFILE "*" 
IFERROR GOTO done
SET new_name = "/destination/folder/" + %sitefile 
FTPRENAME %sitefile new_name    ;; rename file's path to move it on an FTP site 
IFERROR GOTO done  ;; this is a failsafe... it shouldn't happen
GOTO find_file_to_move 
:done 
FTPLOGOFF  ;; harmless error if not connected 
PAUSE /for=600    ;; Ten mins is 600 seconds ...
GOTO start

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The Robo-FTP license will set you back $150 but, if this is for work purposes, your boss will probably spend at least that on one hour of your programming time so maybe it would be worth it considering that it is supported commercial software and might be useful for automating other things in your office.
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Expert Comment

by:lenordiste
ID: 39276160
in case you need a free library, consider these:
http://ftps.codeplex.com/http://ftps.codeplex.com/
http://www.enterprisedt.com/products/edtftpnet/overview.html

I have never used Robo-FTP but if it does the job $150 for a licence is not a rip-off :)
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Author Comment

by:bergertime
ID: 39276217
AlexPace, ok RoboFTP is cool, one question, can I rename the files as they are being moved?  Say the file is MyFTPDocument.edi and I want it to be data1.edi, data2.edi, data3.edi.......etc.  Otherwise for 150 this will be used a lot.  Thanks
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Expert Comment

by:lenordiste
ID: 39276280
in FTP there's no "move" per say. Moving a file is actually renaming it :-) of course you rename the whole path including file names, hence both the file name and the folder can be changed.
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Expert Comment

by:AlexPace
ID: 39276418
Yes you could use a counter to give names like data1.edi, data2.edi, data3.edi and just increment the counter in the loop... but if you could get away with also adding a date then you'll also solve the problem of overwriting a file with another file that has the same name.

For example, suppose the computer reboots and it restarts script counter at 1 but you already have a saved file named data1.edi so that file gets overwritten. You could use the %datetime variable along with a number to guarantee each file name was unique like this:

SETNUM counter = 00000
:start
FTPLOGON "myftp.server.com" /user="UserID" /pw="secret" 
FTPCD "/source" 
:find_file_to_move
FTPGETFILE "*" 
IFERROR GOTO done
INC counter  ;;   increment the counter variable 
SET new_name = "/destination/folder/data" + counter + %datetime + ".edi" 
FTPRENAME %sitefile new_name    ;; rename file's path to move it on an FTP site 
IFERROR GOTO done  ;; this is a failsafe... it shouldn't happen
GOTO find_file_to_move 
:done 
FTPLOGOFF  ;; harmless error if not connected 
PAUSE /for=600    ;; Ten mins is 600 seconds ...
GOTO start

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Another idea that does not include a date might be to use a text file file to keep the last used number persistent through reboots ... the READFILE and WRITEFILE commands would help you do that.  You could do the same thing with a database table and commands like DBQUERY and DBGETRESULTS but that is overengineering it a bit I think I would stick with the text file if I had to have persistent numbering.
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by:bergertime
ID: 39276444
Alex, good.  I have to keep the name under 10 charactors, I had tried to use the date just the minutes and seconds,  but it's no big deal, once they get renamed, they get consumed and deleted so reboots are no big deal.  But it's the strangest thing.  I have 10 test samples in my folder.  First pass through it gets a few, next pass through it gets a few more.....always the same files until they all get renamed.  I think I can get it from here.  Thank you so much.  Just wondering if you had seen it missing some of them.
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Accepted Solution

by:
AlexPace earned 400 total points
ID: 39276481
Oh, yeah... I've seen that... try using GETSITEFILE instead of FTPGETFILE on line 6
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Author Comment

by:bergertime
ID: 39277962
Dude, you rock.
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Author Closing Comment

by:bergertime
ID: 39277966
Thanks for making something boring and tedious actually kind of fun.
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Expert Comment

by:AlexPace
ID: 39278482
Thanks for the kind words!
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